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ulan 22b1da9973 Avoid excessive GCs in small heaps. 
Small heaps and small heap growing factor can lead to excessive GCs in corner cases.

Consider function F(old_gen_size, factor) that returns the number of bytes that
have to be allocated in the old generation to start incremental marking.

F(4MB, 1.1) = 4MB (because of kMinimumOldGenerationAllocationLimit)
F(6MB, 1.1) = 2MB (because of kMinimumOldGenerationAllocationLimit)
F(8MB, 1.1) = 800KB

Funtion F should be monotonic in old_gen_size, but it currently has a minimum
at kMinimumOldGenerationAllocationLimit.

This CL makes F monotonic.

BUG=

Review URL: https://codereview.chromium.org/1144223002

Cr-Commit-Position: refs/heads/master@{#28549}
2015-05-21 12:50:24 +00:00
benchmarks Revert "Refactoring: Make gtest testsuite the default." 2014-09-02 09:17:26 +00:00
build Introduce a new gyp flag to warn about to be deprecated APIs 2015-05-21 10:34:22 +00:00
include Introduce a new gyp flag to warn about to be deprecated APIs 2015-05-21 10:34:22 +00:00
samples Check in hello world example so it stays up to date 2015-05-21 11:19:13 +00:00
src Avoid excessive GCs in small heaps. 2015-05-21 12:50:24 +00:00
test Dropping iterations and speedup from perf results. 2015-05-21 12:49:15 +00:00
testing Removed project_bases_legacy_from_git_repo_url from V8 2015-05-19 14:05:36 +00:00
third_party/binutils Ignore unsupport host architectures for binutils download. 2015-02-10 07:51:42 +00:00
tools Use shared container to manage imports/exports. 2015-05-21 06:15:19 +00:00
.clang-format Change clang-format config to allow for two empty lines between functions 2013-12-03 10:39:21 +00:00
.gitignore Adding ecmascript simd tests. 2015-05-19 10:14:36 +00:00
.ycm_extra_conf.py [ycm] The YouCompleteMe configuration is not VIM specific. 2015-02-12 07:21:13 +00:00
AUTHORS Re-write duplicated assertions 2015-04-01 15:13:21 +00:00
BUILD.gn Use shared container to manage imports/exports. 2015-05-21 06:15:19 +00:00
ChangeLog Update change log to match roll branch. 2015-05-18 15:03:50 +00:00
codereview.settings Removed TRYSERVER_ROOT since this is not used anymore 2015-01-28 11:04:32 +00:00
DEPS Update V8 DEPS. 2015-05-21 04:29:27 +00:00
LICENSE Update LICENSE date. 2014-02-18 10:50:22 +00:00
LICENSE.strongtalk Add LICENSE.v8, LICENSE.strongtalk and LICENSE.valgrind to the v8 2011-02-03 07:10:06 +00:00
LICENSE.v8 Add LICENSE.v8, LICENSE.strongtalk and LICENSE.valgrind to the v8 2011-02-03 07:10:06 +00:00
LICENSE.valgrind Add LICENSE.v8, LICENSE.strongtalk and LICENSE.valgrind to the v8 2011-02-03 07:10:06 +00:00
Makefile Introduce a new gyp flag to warn about to be deprecated APIs 2015-05-21 10:34:22 +00:00
Makefile.android introduce android_x64 build target 2015-03-09 03:23:12 +00:00
Makefile.nacl Use the pnacl-clang toolchain for (P)NaCL builds 2014-10-06 08:10:50 +00:00
OWNERS Add Erik Arvidsson to OWNERS 2015-01-28 18:23:29 +00:00
PRESUBMIT.py [test] Add avx2 bot to CQ. 2015-04-30 08:47:49 +00:00
README.md Fix line breaks in md documentation. 2015-03-25 14:54:54 +00:00
WATCHLISTS Add yangguo@chromium.org to src/snapshot/OWNERS and WATCHLISTS 2015-04-07 13:38:29 +00:00

README.md

V8 JavaScript Engine

V8 is Google's open source JavaScript engine.

V8 implements ECMAScript as specified in ECMA-262.

V8 is written in C++ and is used in Google Chrome, the open source browser from Google.

V8 can run standalone, or can be embedded into any C++ application.

V8 Project page: https://code.google.com/p/v8/

Getting the Code

Checkout depot tools, and run

    fetch v8

This will checkout V8 into the directory v8 and fetch all of its dependencies. To stay up to date, run

    git pull origin
    gclient sync

For fetching all branches, add the following into your remote configuration in .git/config:

    fetch = +refs/branch-heads/*:refs/remotes/branch-heads/*
    fetch = +refs/tags/*:refs/tags/*